Burner.



-H. LITTLETON.

v BURNER.

APPLICATION FILED AUG. 17. 1911.

Patented Jan.9,'1912.

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Zigi/*lzm H. LITTLETON.

BURNER.

APPLIoATIoN FILED mm1?. 1911.

1,014,496. 'Patented Jan. 9, 1912-.

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H. LITTLETON.

BURNER.

APPLIGATION FILED 11116.17. 1911.

1,014,496." 1 Patented 111119, 1912'.A

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VHENRY LITTLETON, OF MARICOPA, CALIFORNIA.

BURNER.

Specification of Letters Patent.

Application led August 17, 1911.

Patented Jan. 9, 1912.

Serial No. 644,517.

ATo all lwhom t may concern:

Be it known that I, HENRY LITTLETON, a citizen of the United States,residing at Maricopa, in the county of Kern, State of California, haveinvented certain new and useful Improvements in Burners; and I do herebydeclare the following to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to spray burners and has for an object to providean L-shaped mixing chamber which will promote a swirling motion of theoil and injected steam so that a thorough mixing of both is effected.

A further object of the invention is to provide a burner having asupplemental fuel outlet so arranged that flame from the burning of theescaping fuel envelops the burner and intensely heats the same.

With the above objects in view the invention consists in certain noveldetails of construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of construction within the scope of theappended claims.

In the accompanying drawings formingVM part of this specification Figure1 is a side elevation of a burner embodying my improvements. Fig. 2 isan end elevation of the burner. Fig. 3 is a longitudinal sectional viewof the burner. Fig. 4 is a detail perspective view of the steam pipedischarge end. Fig. 5 is a side elevation with parts in section of amodified form of the device.

Referring now to the drawings in which like characters of referencedesignate similar parts, 10 designates a T coupling, the opposite endsof the alined branches of which are closed by reducers 11 and 12,thereducer 11 having an axial nipple 13 of less bore than the-axial nipple14 of the reducer 12. Threaded into the lateral branch of the Tpcouplingis an L coupling 15 which communicates with an oil supply pipe 16, theflow of oil through this pipe being controlled by a valve 17 of anypreferred construction.

yThreaded in the nipple 13 of the reducer 11 is a jet pipe 18 whichextends through and is of considerably greater length than the alinedbranches of the T coupling. The threaded end of the pipe extendsoutwardly beyond the nipple and is connected to any suitable steamsupply, preferably the boiler under which the burner is desired tooperate. The discharge end of the jet pipe is reduced and formed with asubstantially square nozzle 19.

Threaded into the nipple 14 of the reduoer 12 is one end of a pipe 20,the opposite end of this pipe being threaded into one end of an L shapedcoupling 21 the opposite end of which coupling is closed by a plug 22.

.This coupling forms a mixing chamber, and

it will be noted that the discharge end of the jet pipe is substantiallyflush with and extends axially into the lower end of the chamber. Thejet. of steam from the jet pipe rmixes with the oil flowing through thepipe 20, and the mixture .being urged forward under the pressure of theinjected steam, will impinge against the curved wall of the chamberwhich confronts the discharge end of the jet pipe and be deflectedupwardly against the plug 22, and from thence will be deflected backagain toward the jet pipe. In this manner a swirling movement of themixture is promoted and a complete mixing of the steam with the oileffected.

Formed in the advance wall 'of the mixing chamber is a downwardlyopening transverse slot 23, the inner end of this slot confronting andbeing disposed centrally relatively to the discharge end of the jet pipeas clearly shown in Fig. 3. Through this slot the mixture will bedischarged and will be directed in a substantially Hat sheet underneaththe boiler to which the burner is applied. Formed in the wall of themixing chamber below the slot is a circular opening 24 of relativelysmall diameter. A portion of the mixture will escape downwardly throughthis opening, and the flame from the burning of the mixture will riseand envelop the entire mixing chamber causing the contents of the latterto be heated and the oil rendered more fluid so that the thoroughmechanical mixing of the oil and steam is promoted.

It is to be understood that to assure best working of the burner, itshould be mounted in upright position, that is, with the plug 22disposed at the highest point in the device. When so mounted, the risingof the flame from the opening 24 will be assured at all times.

In order to drain the device a short length of pipe is threaded into oneside of the T coupling, and to the outer end of this pipe is attached an`L coupling 26 to which is connected a pipe 27, the discharge of oilthrough this pipe'being controlled by a valve 28 of any preferredconstruction arranged in the bore of the pipe.

It will be here stated that the difference between the interior diameterof the pipe 2Oy and jet pipe 18 is preferably but one sixteenth of aninch, practice having demonstrated that this space effects the most efficient'working of the device.

In Fig. 5 the parts of the burner are identical with the parts abovedescribed with the exception that interposed between the' pipe 20 andmixing chamber 2l is disposed a stand pipe 29 having an elbow connection30 with the pipe 20 and an elbow connection 3l with a horizontallydisposed stub pipe 32 which in turn is connected to the above describedmixing chamber 2l. The utility of this intermediate stand pipe is .thatwhen a small amount of oil is designed to be used, the steam beingconfined for a greater length of time in the mixing chamber or in otherwords in the stand pipe, will thoroughly mix with the small quantity ofoil before the discharge of the oil and furthermore this stand pipeconnection permits of the device being used in high furnaces where it isimpossible toV use the preferred form above described.

What is claimed, is

1. A burner including a substantially L shaped mixing chamber having aclosed upper end, an oil supply. pipe communicating with the open lowerend of said chamber, a steam jet pipe within said oil pipe extendinginto said chamber, the outer wall of said chamber being formed with anelongated transverse slotV which confronts the discharge end of said jetpipe, and the lower wall of said chamber being formed with a downwardlyopening orifice of relatively small diameter. l

2. A burner including an oil supply pipe, a steam jet pipe arrangedwithin said oil pipe, an elbow carried by said oil pipe, a

stand pipe carriedby said elbow, an elbow carried at the upper end ofsaid stand pipe, and a substantially L-shaped mixing chamber having alower open end communicating with the last named elbow, and having aclosed upper end, the outer wall of said chamber beingrformed with atransverse slot, and further being formed with an opening ofsubstantially small diameter intermediate said slot and the lower openend of said chamber.

In testimony whereof, I aiiix my signa-V ture, in presence of twowitnesses.

HENRY LITTLETON.

Witnesses:

I-I. S. NEsBIT, 'M. CAMPBELL.

Washington, D. C.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

